they have an eagle expectation that we balance the use of those tools -- equal expectation that we balance the use of those tools in a predicated investigation for which we are allowed to use those tools to protect civil liberties and privacy. just because we have the authority by law to use certain techniques, we have a responsibility and a requirement to do so in a manner that is least intrusive whenever possible. sometimes, even an interview is to intrusive. if we think you have been involved in wrongdoing because we have received information and we can't corroborate aspects of it and we are authorized to open and we can corroborate aspects of it and we are authorized to open investigation, we can have a discussion with you at your work lace. the interview itself -- at your work place. the interview itself is less intrusive, but doing it at your work place is an intrusion on your privacy. this causes people to have concerns they should not have. we take care to measure the technique used and the manner it might be used before we do it. oversight is provided by the leadership as well as